The chairs on Amazon.de and Amazon.com are the same exact cheapo "hospital" chairs that aren't suitable for long-term use for most people. Germans aren't all zipping around on cheap hospital chairs any more happily than Americans are.
https://www.amazon.de/-/en/PEPE-Wheelchair-Lightweight-Trans...
https://www.amazon.com/Drive-Medical-Wheelchair-Removable-Fo...